Elevator-signal.



R. H. GAYLORD.

ELEVATOR SIGNAL.

APPLICATION FILED OCT. 26, 1915.

1,221,527. Patented Apr. 3, 1917.

5 SHEETS-SHEET 1.

h/aw/a/ R. H. GAYLORD.

ELEVATOR SIGNAL.

APPLICATION FILED OCT. 26. 1915.

Patented Apr. 3, 1917.

5 SHEETS-SHEET 2 Bran/az- R. H. GAYLORD.

ELEVATOR SIGNAL.

APPLICATlON FILED 0m. 26. I915.

Patented Apr. 3, 1917 5 SHEETS-SHEET 3 RaJav/fl'qy/b 2 R. H. GAYLORD.

ELEVATOR SIGNAL.

APPLICATION FILED OCT. 26. 1915.

1,221,527. Patented Apr. 3, 1917.

5 SHEETSSHEET 4. I d

.hran/ar R. H. GAYLORD.

ELEVATOR SIGNAL.

APPLICATI'ON FILED 0CT.261 19I5.

1,221,527. Patented Apr. 3, 1917.

5 SHEETS-SHEET 5.

fig. /0 v I UNITED STATES PATENT OFFICE.

ROBERT H. GAYLOBD, 0F PASADENA, CALIFORNIA, ASSIGNOR TO B. H. GAYLORD GOM- PANY, DE LOS ANGELES, CALIFORNIA, A CORPORATION'OF CALIFORNIA.

ELEVATOR-SIGNAL.

Specification of Letters Patent.

Patented Apr. 3, 1917.

Application filed October 26, 1915. Serial No. 57,918.

in such an elevator signal system, means whereby selectivesignals for different cars and for different directions of movement of the cars,-may be received on one and'the same receiving device at a landing.

Another object of the invention is to prevent simultaneous announcements being made at a floor, calling attention to cars traveling in opposite directions.

This invention relates especially to an elevator signal of the special type wherein the signals are given at the floor by" telephonic announcing means and an important object of the present invention is to provide automatically operating phonographic means whereby the announcements may be made without the intervention of the elevator car operators.

Another object of the invention is to provide for construction and operation of the phonographic call means such as above referred to, in such manner as to prevent undue wear of the phonographic record, and to insure clear and complete calls at each operation thereof. p I

The accompanying drawings illustrate embodiments of my invention, and referring thereto: y

Figure 1 is a longitudinal section of the car-operated switch. I

' Fig. 2 is an inverted plan view of the switch means forcontrolling connections to the landing signals, taken-on the line 2'2 in Fig. 1.

Fig. 3 is a transverse section on line 33 in Fig. l.

Fig. 4 is a section on line 4.4 in Fig. 1.

Fig. 5 is a section on line 55 in Fig. 1.

Fig. 6 is a diagram of the circuit connections.

Fig. 7 is a side elevation of the circuit closing and resetting means.

Fig. 8 is a partly broken plan view of the phonographic call transmitting means.

Fig. 9 is a vertical section thereof.

Fig. 10 is a diagram of a modification of the phonographic call circuits, in which separate phonographic devices are provided on the'cars.

Fig. 11 is a plan view of the phonographic device shown in Fig. 10.

Fig. 12 is a diagrammatic elevation showing a modification ofthe inventioninwhich the phonographic call devices are controlled by the car operator.

Fig. 13 is a side elevation of the phonogra'phic control means used in connection with the form shown in Fig. 12.

Referring to Figs. 1 to 5, the car-operated switch therein shown is similar to that disclosed in the patent to J. B. Smalley-and C. A. Reiners, dated July 24, 1906, No.

826,752, except that the contacts for the floor signals have been omitted and a special switch means substituted therefor. Said car-operated switch comprises a frame 1, a screw 2 mounted to turn in said frame and connected to the elevator operating mechanism so as to move in correspondence therewith; a movable switch member 3 carried by said screw, formed as a rocking cross arm having a screw threaded hub 3 fitting said screw; frames 1 and 4c pivoted at opposite ends of said cross arm and carrying respectively, pairs of movable contacts 5 and 5' for controlling the car-signal circuits; and fixed contacts 6, 7 and 6, 7 mounted on frame 1 for cooperation with the contacts 5 and 5' respectively. Switch member 3 is mounted to rock on screw 2, "under the frictional action of the screw, as set forth in the patent aforesaid, sov as to bring the contacts 5 or 5 at one side or the other in contact with the fixed contacts 6, 7 or 6, 7 as the case may be, according to the direction of motion of the screw, so that when the elevator car connected to the switch is moving down, the pair of contacts 5 will slide on contacts 6" and contacts 7 at one side of the switch, making connection therebetween, as shown in Fig. 8, while'the contacts 5 at the other side will ride on the contact 7 without making connection with the contacts 6, the construction and operation of these parts being the same as in the said patent. Contacts 7 and 7 are long feed contacts and contacts 6 and 6 correspond in number and position to the floors of the building, connection thereto being con trolled by circuit closers at the respective floors. In the present case, in conformity with the patent aforesaid, I have shown this control as effected through mercury cups 10 and 10 controlled by electromagnets 11 and 11 in circuit with push buttons at the respective floors, and resetting means are provided for these mercury cup circuit closers, comprising series of contacts 8, 9 and 8 9, at opposite sides of the switch, cooperating with pairs of contacts 12 and 12 on the respective frames 4 and i and connected to control resetting magnets 13 and 13 for the mercury cup circuit closers, as in said patent. The rocking movement of the member 3 is controlled by guide means, consisting of track rails 15, 1G and 17 forming two ways for a shoe 18 on an arm 19 extending from said member 3, suitable means, as shown in said patent being provided for guiding the shoe from one to the other of said ways when the arm is rocked by reversal of motion of the screw at either end of its travel.

My special switch means for controlling the floor signal circuits comprises a double series of contacts 22 and 22, mounted on an insulating switch board 21 at the top of the car-operated switch and a switch member 25 carrying contacts adapted to icooperate with the contacts 22 and 22 and operated by the main switch member 3. For this purpose the member 3 may have a projection 27 which engages between lugs 28 on member 25, so as to move the member 25 longitudinally with the member 3. Member 25 is formed as an insulating plate, carrying contacts 34:, 3-1 and 35, 35 and mount ed to rock on pivots 29 on metallic shoes 30, 30, which slide in metal tracks or guides 31 and 31 and are held into frictional engagement with said tracks by a spring 32 which extends in a bore 33 in member 25, between the ends of the pivot portions 29 of the shoes, insulating washers 20 and 20 being inserted between spring 32 and pivot portions 29. The lugs 28 on member 25 are below the pivots 29 so that when the member 3 is moving in one direction, say for up travel of the elevator car, the pro- .j'ection 27 on member 3 engages one of said lugs to rock the switch member 25, so that contacts 34 and 3 1 at the forward end of member 25 will ride on the series of fixed contacts 22 and 22, and when the motion of member 3 is reversed, for down travel of the car, the member 25 will be rocked to bring the contacts 35 and 35 at the other end thereof, into riding engagement with contacts 22 and 22, the contacts 34; and 34: being at this time removed from riding engagement with contacts 22 and 22. Contacts 31, 31 and 35, 35 may be formed as pins sliding in holes in member 25 and having heads 37 at their lower ends engaged by spring 38 to press the said contacts toward the respective contacts 22 and 22. The springs 38 for each pair of contacts 31- and 35, or 3% and 35, may be formed of a single strip of metal connected by a wire 39 or 39 to the adjacent shoe 30 or 30, so that contacts 3% and are connected to shoe 30 and contacts 34: and 35' are connected to shoe 30. In addition to the series of contacts 22 and 22 end contacts 36 and 37 are provided at the ends of series 22 and end contacts 36 and 37 at the ends of series 22.

The means for automatically transmitting announcements or calls to the respective floors comprises phonographic devices, and telephonic means ope 'ated thereby. ll prefer to arrange all the phonographic devices in a single compact instrument, which may be placed near the usual overhead devices at the top of the shafts, so as to facilitate connections. Said phonographic devices comprise a plurality of reproducers whose reproducing needles or points all (preferably diamond or equivalent durable points) are adapted to run in different soundrecord grooves 42 on a cylinder 4L3. Cylinder 13 is mounted on a shaft 1&0 driven by any suitable motor indicated at 141, so as to run continually at uniform speed.

There are two sound record grooves for each car, one to give the up signal, and the other to give the down signal, for that car, and each groove is provided with sound wave engraving adapted to produce a phonographic announcement giving the number of the car, and its direction of motion; as for example, Number two car up, Number three car down, etc. Each groove preferably extends around the cylinder so as to form a continuous annular groove, the sound wave engraving extending only part way around the cylinder, so as to leave a smooth portion 42. The reproducer may be provided with the usual lever Q1 carrying the reproducer point or needle 41, and adapted to operate the diaphragm in the sound box 4 1 of the reproducer. The sound boxes for all the reproducers may be mounted on a support 16 in fixed position, and the sound boxes for each pair of reproducers corresponding to any one car are connected by tubes :7 to a tubular fitting 17 adapted to enter the mouthpiece d8 of a telephonic transmitter 48, preferably in such manner as to transmit the sound without making an air tight joint. The telephonic transmitter is preferably of the duplex type shown, comprising a central diaphragm 49 connected by an insulating rod 49' to the sound receiving diaphragm 50, and conducting plates 51 and 51, on opposite sides of the central diaphragm 49, fragments of carbon being interposed between said plates, as shown at 52 and being held in place by insulating retaining means 52. The members 49, 51 and 51 are connected in the announcing circuit as hereinafter described.

The lever 41 is normally held in a raised position, so as to hold the reproducer point 41 off of the cylinder 43, by means of a lifting lever 53 which engages with said lever 41 and operating on said lever 53 by a spring 54. Electromagnets 55 and 55 connected in controlling circuits, as hereinafter set forth operate armatures 55 on levers 53, to draw said levers down, so as to permit levers 41 to fall to position to bring the reproducer points 41 onto the cylinder 43. This operation of the levers 53 is further controlled by timing devices, comprising flanges 56, 56 on disks 57 and 57 carried by a shaft 58 which is driven at one half the number of revolutions per minute of the record cylinder 43 by chain or other gearing indicated at 59, these flanges 56,

56 engaging projections 53 on levers 53to prevent the descent of said levers, except when the unflanged portions of the disks 57, 57 are passing under said projections 53. The flanges 56, 56 corresponding to the up and down reproducers are oppositely placed on the disks 57 and 57, so that during certain periodsof time, all of the up reproducer levers 41 are free to be lowered by the action of their armatures, the down lovers being kept from lowering by the flanges corresponding thereto, and during the alternate periods of time, the down reproducer levers are free to be lowered while the up reproducer levers are kept from lowering. By this means I insure that simultaneous signals cannot be given for up and down cars. The flanges 56, 56 are so located on disks 57 and 57 and said disks are so connected to the shaft 140 of the cylinder 43 through the gearing 59 that each of said flanges passes from under the corresponding projection 53 and allows the reproducer lever 41 to descend at a time when the smooth portion 42 of the groove 42 is passing beneath the reproducer point, so that the reproducer point enters first the smooth portion OfthG groove and is led thereby on to the portion containing the sound wave engraving, thereby avoiding damage to either the record or the repro- .tation and thesmooth portion 42 is again beneath the reproducer point, which is therefore lifted from the record at a time when there is no sound reproduction. The core and armature of electromagnet 55 are so constructed (for example by making one of said members a permanent magnet) as to enable the armature to be held to the core when once attracted, until it is forcibly removed from the core by the operation of flange 56 or 56 on projection 53, so that when the announcement has commenced, it will proceed until it is finished, regardless of maintenance of the energization of electromagnet 55 during the entire period required for the announcement. Flanges 56 and 56 also operate contacts 130 which cotiperate with contacts 131 to shortcircuit electromagnets 55 and 55, except when said contacts 130 are separated from contacts 131, by operation of said flanges. Armature lever 53 also controls a' circuit closer for the telephone transmitter circuit consisting of spring contacts 60 and 61, contact 60 being normally engaged by an insulated projection 60 onlever 53 so as to normally be held off of contact 61.

One of the car-operated switches, above described, may be placed over each shaft and operated by the car traveling in such shaft. A single complete set of mercury cup circuit closers may however be provided for the Whole bank of elevators in a building, and a single series of push buttons or circuit closers may be provided at the several floors tom landings may be provided with pushv buttons 67 and 68 respectively. At each.

landing there is also provided a loud talking telephone receiver 66.

As shown in Fig. 7, the mercury cup circuit closer may comprise a circuit closing lever cotiperating with a mercury cup 109, and normally held in open position by the armature 111 of an electromagnet 11, so that when said electromagnet is energized, the lever will fall to close connection at such cup. Said lever 110 is also provided with an armature for a resetting electromagnet 13.

Each elevator car, indicated at 112, in this embodiment of my invention, is preferably provided with a signal receiving device, such as an electric lamp 40, with a switch 64 for disabling the resetting connections, and with a switch 65 for disabling the call transmitting circuit.

The circuit connections are as follows: A

"calls at each floor. for all the floors except the bottom floor are current, indicated at 71, to a switch 72,

whence a wire 73 leads to one side of each of the push buttons, both for up and down The up push buttons connected respectively by wires 71 to the respective electromagnets 11 for the mercury cup circuit closers 10, for the up side of the several circuits, and wires 75 lead from said magnets to a wire 76 connected to a wire 77 which leads to the other side of battery 71. A wire 80 leads from battery wire 70 to the disabling switch 61 in the car, whence a wire 81 leads to the long resetting contacts 9 at the up side of each caroperated switch. The contacts 8 of said switch are connected by wires 82 to the respective resetting electromagnets 13, from which wires 81 lead to a wire 85 connected to the battery return wire 77. The down push buttons for all the floors except the top floor are similarly provided with connections 71 to the respective electromagnets 11 for the down side of the several circuits, the'connections for said electro-magnetsbeing completed by wires 75 and 76"to the battery return wire 77. The resetting con nections for the down side lead from wire 81 by wire 81 to the long contact 9 of each car-operated switch and from the contacts 8 by wires 82 to resetting electromagnets 13 and from said electro-magnets by wires 81 and 85. to battery return wire 77. The push buttons for the top and bottom floors are connected to a wire 87 leading through resistance 88 to the wire 7 6 connected to the battery return wire 77. nections are, or. may be, substantially the same as in the patent above referred to, these constituting the controlling connections for the mercury cup circuit closers. The circuits for the signal means proper are energized by another source of current, in dicated at 90, which may be a generator or supply circuit adapted to supply current suitable for energizing the signal lamps 10 in the cars. A wire 91 leads from said current source to the signal lamp 10 in each elevator car, and from said lamp a wire 92 leads to the switch 65 in that car. A wire 93 leads from switch 65 to branch wires 97 leading to the respective electromagnets 55, from which wires 98 lead to the feed contacts 7 at the up side of the car-operated switches. Similarly wires 97 lead from wire 93 to the'electromagnets from which wires 98 lead to the contacts 7 at the down side of said switches. Contacts 6 at the up side of the said switches are connected by wires 91 to the mercury cup circuit closers 10 from which wire 95 leads to a return wire 96 leading to the other side of current source 90. Similarly connections 91 are made from the down contacts 6 to All of these con-' the corresponding mercury cups 10 and wire 95 leads from said mercury cups to the return wire 96. A call bell 101 may be provided in a shunt connection 102 around switch 72, so that by opening said switch the system may be adapted to run on call instead of on schedule.

The telephonic devices are preferablyenergized by a separateenergizing circuit, one of whose leads 115 is connected by branch wires 116, 110 to retardation coils 117, 117, from which wires 118, 118 lead to the out side conducting plates 51, 51 of the duplex telephone transmitter. T he intermediate conducting member 19 of each transmitter is connected by a wire 119 to the contacts for both the up and down transmitter circuit closers. The other contact 01 of each circuit closer is connected by a wire 120 to the other lead wire 121 of the supply circuit. The transmitting circuit comprises wires 123, 123, leading from the respective branches 118, 118 to condensers 121 and 121 and wires 125 and 125, leading respectively from said condensers 121 and 121 to the strips or tracks 31 and 31 for the corresponding car-operated switch. The contacts 22 of said. switch are connected by wires 99 to the respective loud talking telephone receivers 66 at the landings, from which wires 99 lead to the contacts 22' of said switch. v

The fixed contacts 22, 22 of the car-operated switch or the wires 99, 99 leading thereto, are cross connected by wires 129 and 129 to corresponding contacts or wires in the car-operated switches for all the other cars. Similar cross connections will be provided for the controlling contacts 8 of the car-operated switch. The wires 80, 81, 91, 93 leading to the car will be mounted in flexible cables as in usual practice, or otherwise, so as to maintain connection with'the car in its travel.

The operation of the form of my invention above described is as follows: Assuming that one of the down push buttons is closed, for example the button 69 for the fourth floor, as shown in Fig. 6, current will then flow from battery 71 through wire 70, switch 72 and wire 73 to push button 69, thence by one of the wires 71 to the electromagnet 11 corresponding to the fourth floor, and from said electromagnet by wire 7 5. to wire 76 and thence by wire 77 back to battery 71. Electromagnet 11 being thus energized, attracts its armature v111 and allows the circuit'closer lever to 'fall into I the mercury cup 109. WVhen any elevator car, in its descending movement approaches within, say, two floors of the fourth floor, its contacts or brushes 5"close connection between the contact 7 and the contact 6 corresponding to such floor, and a car signal circuit is then closed as follows: from current source 90 through wire 91, signal lamp 40, wire 92, switch 65, wire 93, one of the branch wires 97 electromagnet corresponding to the down operation of the approaching car, from said electromagnet through wire 98 to feed contact 7, for the car operated switch corresponding to said car, brush 5, contact 6, corresponding to the calling floor, wire 94 and mercury cup 10 corresponding to a down call at said floor and thence by wire 95 and 96 back to A .is removed from contact'spring 60, which then moves into contact with the contact spring 61, thereby closing connection to the transmitter 48. This descent of lever 53 also allows the reproducing point 41 to enter the groove 42 in the smooth portion 42' thereof, and as the cylinder 43 rotates it causes the sound wave engraving in the record groove to engage the reproducer .point and produce the announcement in the sound boX 44, this announcement being transmitted through the tubing 47 47 to the telephone 48. The sound waves acting on the diaphragm 50 of said transmitter, operate the diaphragm 49 through rod 49 and cause. the resistance of the carbon 52 at each side of the said diaphragm to vary inversely. Under normal conditions, the potentials at the two sides of the transmitter are balanced, but when the resistances of the carbon -so that a difference of potential exists between the wires 118 and 118, this difference of potential varying in accordance with the sound waves, and producing a telephonic current as follows: from wire 118 through condenser 124, wire 125 to track 31, thence by shoe 30, wire 39 and contact 35 to the contact 22 corresponding to the calling floor, thence by wire 99 to the announcing or loud talking telephone 66 at the calling floor, thence by wire 99, contact 22, contact 35, wire 39, shoe 30 track'31 and wire 125,

condenser 124 to wire 118. The person sending the call from the fourth floor or landing thus receives an answering call or signal, in the form of an announcement of the number of the car which is approaching the floor and will stop thereat to take him on. Thus the announcement may be Number two car down. As the car is descending at this time, the switch member 25 is rocked forward, by operation of the projection 27 of the main switch means, so that the forward pins 35 and 35 make connection with the.- fixed contacts 22 and 22, which correspond 7 to a floor in advance of the car, whiclnQis the floor that has given the signal, so that simultaneously with the energization of the signal lamp, connection is made to the tele phone device at the calling landing.

As the car continues to descend, the contact pins 35 and 35 aforesaid pass off of the fixed contacts 22 and 22 corresponding to the calling floor and break the telephonic. connection, but the length of these contacts is such as to provide for maintenance of connection while the car is traversing the height of, say, somewhat more than one .story of the building, and the phonograph cylinder is driven at such speed as to provide for at least one announcement, and

' preferably repetitions thereof, during this time. In the continued descent of the car, the brushes 12 on the main car-operated switch make connection between the long contact 9 and the resetting contact 8 corresponding to the calling floor, thereby closing a circuit from theba'ttery as follows: through wire 80, switch 64, wires 81, 81, contact 9, brush 12, contact 8, wire 82, resetting electro magnet 13 for the fourth floor, and wires 84, 85 and 7 7 back to the battery 71. The current through this circuit energizes electromagnet 18 and causes the armature thereof to open the mercury cup circuit closer, which is then held in open position by the armature o-f electromagnet 11, the latter electromagnet being at this time deenergized by reason of the open con dition of its circuit at the push button. This completes the signaling operation, the circuits being then in normal condition.

In case the operator wishes to prevent the announcement at a floor, he will open switch 65, thereby opening the circuit for energiz- 0 ing the telephone transmitter 48 and electro, magnets 55 and 55, so that the phonographlc and telephonic levers are not operated. If

.he wishes to transfer the signal to the next car, he will press the button 64 and thereby 4 disable the circuit for the resetting electromagnets, so that the calling circuit is retained in condition readyvto grivethe signal to the next following car.

The purpose of contacts 130 and 131 is to prevent the reproducer point from being lowered onto the sound engraving on the record cylinder in case the signal current comes on the line at a time when this engraved portion is passing beneath the reproducer point. These contacts 130, 131 establish a short circuit for electromagnet 55 or 55, thereby disabling said electromagnet, at the time referred to, but are opened at the proper time by engagement of flanges 56 and 56' therewith to enable the reproducer point to be lowered onto the smooth portion of the record groove.

While T prefer to assemble all the phonographic devices in a single instrument as above described, said devices may in some cases be located in the different cars. Thus as shown in Figs. 10 and 11, each car may contain a phonographic device with record cylinder 150, provided with two grooves 151 for reproducing, respectively, up and down calls for that car, or other announcements relative to the car and the routine operation of same, the reproducer points for co'ciperating with said groovesbeing normally lifted off of the record cylinder by armature levers 153 controlled by electromagnets 155 and 155. The construction and operation of these parts is the same as above described. The motor 157 for operating the record cylinder may be connectedvby suitable circuit connections 15S and 159 with the general car lighting circuit. The electromagnets 155 and 155 are connected respectively in branch circuits 160 and 160 leading from the transmitter member 49' to the wires 98 and 98 which are connected to the respective long contacts 7 and 7 of the car-operated switch. The connections 91 92 for the signal lamp 40 are controlled by the mercury cup circuit closers 10 as above described, but in this case, when connection is closed at a mercury cup circuit closer at the contact of the car-operated switch corresponding thereto, current will flow as follows: from current source 90, through wire 91, signal lamp 40, switch 65, to wire 92 leading to the telephone transmitter and thence by wire 160, say, (in case of up motion of the car) to the electromagnet 155, thence by wire v98 to contact'7 in the car-operated switch, and through movable brush 5 to contact 6 corresponding to the op erated circuit closer, thence by wire 94 to circuit closer 10 from which the current passes through wire 96 back to current source 90. The electromagnet 155 being thereby energized acts on lever 153 and lowers the corresponding reproducer on the record cylinder as soon as timing device 57 permits of said lowering, and'the announcement for the car is transmitted to the calling floor by operation of the reproducer and the transmitter 48, the telephonic current from the latter passing through the condenser 124, wire 125 and members 31, 30, 34, 22 of the car-operated switch and wire 99 to the receiver 66 at the calling floor, and back through con-- nections 99, 22', 34', so, 31', 125', 124', to the other side of the transmitter.

In case the automatic operative control of the phonographic devices by the coactions of the circuit closers and the car operated switch, is not desired, 1 may, as shown in Fig. 12, provide for control by manually operated means, under the control of the caroperator. For this purpose the transmitter 48, located in the car, may be included in an independent circuit 170, 171, controlled by the contacts 60 and 61 operated as above described by armatures 53 of the electromagnets 55 and 55, which are constructed to control the reproducers for the up and down recording devices as described in connection with Figs. 8 and 9, and are controlled by timing disks as shown in said figures. Said electromagnets are in this case included in local circuits 174 and 174 with a battery 175, and push buttons 176 and 17 6' whereby either one of the electromagnets may be operated. The electromagnets 55 and 55 or their armatures are provided with permanent magnet portions whereby the armature will be held down when once attracted until it is raised by the operation of the flange 56 on the timing disk, 57, as above described. The motor 163 is connected to any suitable energizing circuit. The telephonic connections are the same as above described.

What I claim is;

1. In an elevator signal system, selective signal transmitters controlled by the operation of different cars and adapted to send signals consisting of electric impulses differcntiated for each car and for up and down motion, and a single receiving means at a' floor connected to receive such signals from all of said transmitters.

2. In an elevator signal system, signal transmitters controlled by the operation of different cars and adapted to send electric signal impulses differentiated for each car and for up and down movement of each car, and a single electromagnetic device connected to receive such signals from all of said transmitters. s

3. In an elevator signal system, selective signal transmitters controlled. by the operation of different cars, a single signal circuit for each floor adapted to receive signals from said selective signal transmitters, and a single signal receiving means included in each of said circuits and adapted to receive selective signals from all of said transmitters.

4. In an elevator signal system, signal transmitting means controlled by the operation of different cars to send selective sig nals, landing signal circuits connected to said transmitters and controlled thereby and comprising a single circuit for each landing, and a single signal receiving means included in each of said circuits and adapted to selectively receive signals from a plurality of said transmitters.

5.1n an elevator signal system, a plurality of cars, a plurality of devices corresponding to different cars for transmitting selective signals, landing signal circuits con.

nected to all of said transmitting devices and respond to up and down signals from all the devices and to deliver said selective signals to a certain one of said signal receiving means.

7. In a multiple car elevator system, up and down circuit closers at each floor and selective signal transmitting means controlled by said circuit closers and by the movement of the cars to send selective up and down signals, landing signal circuits comprising a single circuit for each land -1ng, and a slgnal receiving means at a landing, included in each of said circuits and selectively responsive to either up or down signals transmitted by said transmitting means for all the cars.

8. In a signal system for elevators, a plurality of phonographic devices adapted to reproduce selective announcements, telephonic means to transmit said announcements, telephonic receiving means at the landings, a switch operated by each car, circuit closers at the landings, and circuit con nections controlled by said circuit closers by said car-operated switches to control the sending of a selective signal to a landing at which a circuit closer has been operated.

9. In an elevator signal system, up and down circuit closers at the landings, car operated switches for different cars, selective signal receivers at the landings, and selective signal transmitters controlled .by

said circuit closers and by said car-operated switches and .1nclud1ng means for sending up signals, means for sending down sig-' nals, and time-controlled means for bringing such up and down signal means alternately into operation to send up signals alternately with down signals to the same receiver, in case both up and down calls have been sent from thesame landing and two cars are approaching the said landing from electromagnetic device connected to all of said transmitters and adapted to selectively cars.

In a multiple ca r elevator signal system, a single receiver at a landing adapted to receive up and down signals from all the cars, signal transmitting means controlled by the movement of the cars to send up and down signals to said receiver, and means for controlling the transmission of up and down signals so that a signal for a car going in one direction will be completed without interference by a signal from a car going in the opposite direction. 1

12. In a multiple car elevator signal system, a single receiver at a landing adapted -to receive up and down signals from all the ,cars, signal transmitting means controlled by the movement of the cars to send up and down signals to said receiver, and means for controllingperiodically the transmission of said signals, so that each signal for a given direction of movement of the car, will be repeated at intervals during the time of control by the car, and a concurrent signal for a car going in the opposite direction will be alternated with the signals for the first car.

13. In an elevator signal system, signaling devices for sending up and down signals, receiving means connected to receive such signals, and time controlled devices for alternately disabling the transmitting de vices for up and down signals.

14. In an elevator signal system, a signal receiving device at a landing comprising a single electromagnetic device receptive to signals for all cars in both directions of travel, a plurality of selective signal transmitting devices, suitable circuit connections, and means whereby signals for cars traveling in different directions are prevented from being transmitted to the receiving device at the landing simultaneously.

15. A multiple car elevator signal system, comprising an up and down circuit closer at a landing, a car operated switch for each car, a single signal circuit for each landing including a single receivihg device at the landing adapted to receive selective signals from all the cars, and a signal transmitting device'for each car underselect ve control of the circuit closer coact ng with the car operated switch and car s1gnal, by which selective signals are transmitted to the receiving device at the landlng.

16. A multiple car elevator slgnal sys tem, comprising a phonographic device for reproducing selective signals corresponding to different cars, and telephonic means for transmitting the signals.

17. In an elevator signal system, a pho-' nographie reproducing means adapted to reproduce announcing signals corresponding to the different cars and to directlon of movement thereof, and means for transmitting such signals to the different floors.

18.'In an elevator signal system, a pho-' nographic device adapted to reproduce announcing signals corresponding to difl'erent cars and to direction of movement thereof,

means for transmitting such signals to different floors, and car-operated means for selecting the floor to which the signal is transmitted in correspondence with the position and motion of the car.

19. In an elevator signal system, a phonographic device provided with means of reproducing signal calls corresponding to different cars and to the direction of motion thereof, circuit controlling means at different floors, and means controlled by said circuit controlling means for transmitting the call to the floor corresponding to an operated circuit controlling means.

20. In an elevator signal system, a. phonographic device adapted to reproduce signal calls corresponding to different cars and to the direction of motion thereof, circuit controlling means at different floors, a caroperated switch and telephonic circuit means controlled by said circuit controlling means and by said car-operated switch, and including telephonic transmitting devices operated by said phonographic device and telephonic receiving devices at the difi'erent floors, for announcing the signal call at a floor for which the circuit controlling means has been operated, and which the signaling car is approaching.

21. In an elevator signal system, a phonographic record means, provided with sound engravings corresponding to selective signal announcements, a reproducer having a reproducer-pomt adapted to cooperate with the sound engraving, means for moving said record means, car'operated means, and means controlled thereby for bringing said reproducer point in contact with the sound engraving on the record means.

22. In an elevator signal system, a phonographic record means provided with a record groove having a sound engraving portion and a blank portion, reproducer means adapted to move into and out of said groove, a car operated switch, landing circuit closers, circuit means controlled by said switch and circuit closers and including means for controlling said reproducer means to lift it out of and lower it into said groove, operating means for moving said record means, and timing means operated by said operating means for preventing the reproducer means from being lowered into the groove except when the blank portion thereof is passing the same.

23. In an elevator signal system, a phonographic record means provided with a record groove having a sound engraving portion and a blank portion, reproducer means adapted to cooperate with said sound engraving, an electromagnet and means controlled thereby for moving the reproducer means into position to cooperate with said sound engraving, and adapted to retain the position in completion of the signal.

reproducer means in such position when once operated, a car operated switch, landing circuit closers, and electric circuit means controlled by said car operated switch and landing circuit closers and connected to operate said electromagnet responsively to movement of the car and the operation of the landing circuit closers, operating means for moving the record means, timing means operated by said operating means for preventing the reproducer means from being moved into position to cooperate with the record groove, except when the blank por-. tion thereof is passing the reproducer and for moving the reproducer means to normal position on completion of the signal, and means controlled by said timing means for controlling said electromagnet to prevent operation thereof while the sound engraving is passing beneath the reproducer means.

24. In an elevator signal system, a phonographic record means provided with a record groove having a sound engraving portion and a blank portion, reproducer means adapted to cooperate with said sound engraving, an electromagnet and means controlled thereby for moving the reproducer means into position to cooperate with said sound engraving and adapted to retain the reproducer means in such position when once operated, a car operated switch, landing circuit closers, and electric circuit means controlled by said car operated switch and landing circuit closers and connected to opcrate said electromagnet responsively to movement of the car and the operation of the landing circuit closers, operating means for moving the record means, timing means operated by said operating means for preventing the reproducer means from being moved into position to cooperate with the record groove, except when the blank portion thereof is passing the reproducer and for moving the reproducer means to normal 25. In an elevator signal system, a single receiver at each landing, adapted to receive distinctive up and down signals, and controlling circuits for said receivers, including car operated means whereby a car transmits different signals to said receiver for up and down directions of inovementof the car.

26. In an elevator signal system, a selective signal transmitting device, a single selective receiver at a landing, circuit closers at the landings, a car-operated switch, series of contacts for different directions of travel ofthe car-operated switch,a signal in the car with branch circuits to each of the series of contacts, and electromagnetic means in each of the branch circuits for controlling the sending of distinctive signals according to which branch circuit is energized.

27. In ano elevator signal system, phonographic reproducer means provided with 10 after having been brought record means having a sound Wave engraving, means for operating said record means, a car operated switch, landing circuit closers, a controlling circuit for said reproducer means, and connected to be operated under control of said car operated switch and landing circuit closers and means whereby the reproducer Will be held in cooperative.

relation With the sound Wave engraving,

1nto such cooperatlon, until completion of the operation of said sound Wave engraving, whereby the announcement Will be completed, regardless of the denergization of the controlling circuit.

In testimony whereof I have hereunto set my hand, at Los Angeles, California, this 19th day of October 1915.

ROBERT H. GAYLORD. 

